With a solid outside finish unlike the ASPEN-40D, the VAIL-40S is a single-sided extrusion with a profile width of 40mm(1.6in.). The VAIL-40S is rigid because its backside has a longer metal edge for reinforcement, making it especially great for wall mounting and hanging overhead. Plus, it is lightweight; however, for widths longer than 4ft., it is not recommended to be used as a free-standing display without a support because of its thin profile width. When installing the fabric graphic, the silicon beading can fit 12mm (.47in.) deep and 3mm (.11in.) wide into the silicone beading trough. Not compatible with lights (cannot be back-lit).